Circulating pump makeup pump control equipment maintenance

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First, the control cabinet maintenance: 1) to maintain indoor ventilation, dry. 2) Regularly check the control cabinet to indicate whether there is power supply, the voltage is 380V. 3) Regular power cut Check the control cabinet components are normal, the wire is loose. 4) regularly check whether the pipeline leaks, leaking. Second, the pump maintenance: 1) The inlet pipe must be filled with liquid, the pump is prohibited in the turbid state long-term operation. 2) Regularly check the motor current value, must not exceed the motor rated current. 3) Long-term operation of the pump, due to mechanical wear, the unit noise and vibration should be stopped and checked, if necessary, replace the vulnerable parts and bearings, unit maintenance is generally one year. 4) Mechanical seal lubrication should be clean without solid particles. Mechanical seal dry work is strictly prohibited. 5) Before starting the pump should be circling a few laps, so as not to suddenly start causing graphite rupture damage. Seal leakage allow 3 drops / min, otherwise it should be checked.

Meniscus Spherical Lens

Meniscus Lenses: The Positive Meniscus can increase the NA of the system while only adding slightly to the total spherical aberrations. The Negative Meniscus Lens is used to increase the focal length of another lens while maintaining the angular resolution of the optical assembly. This lens shape is best used when one conjugate is relatively far from the lens. The meniscus lens plays a divergent role in the optical path, and is commonly used in photographic system, objective lens system and laser measuring system.

We supply kinds of Plano-Convex Spherical Lens,Plano-Concave Spherical Lens,bi-convex Spherical Lens,bi-concave spherical lens,meniscus spherical lens,special spherical lens,achromatic spherical lens,ball lens,sphere lens etc.

spherical lens

Specification of our optical meniscus spherical lens as follow:
*Material BK7,CaF2 crystal,MgF2,Ge,BaF2 lens,ZnSe or other optical materials
*Dimension Tolerance +0.0 - -0.1mm
*Center Thickness +/-0.1mm
*Focal Length Tolerance+/-1%
*Surface Quality:60/40
*Surface Figure:lambda/2 at 633nm on plano side
*Clear Aperture >90%
*Chamfer 0.25mm at 45 degree typical
*Coating Optional


Meniscus Spherical Lens,Meniscus Spherical Lenses,Optical Glass Meniscus Lens,Glass Meniscus Lens

China Star Optics Technology Co.,Ltd. , https://www.opticsrealpoo.com